Re: [PipingDesign] A105 flanges with API 5L Gr. X52 Pipie

From: <alimalvi300@hotmail.com>
Date: Sun Mar 22 2009 - 13:47:00 EDT

> If there is no such issue, NEXT question is Weldabality of
> different Grades.
> I do not think there is any such issue between A105 and X52 grade.
>There is if you don't have a qualified weld procedure and welders
>qualified to use it.

I believe that all the renowned EPC companies have their own welding procedures and qualified welders.

Regards.

From: Christopher Wright
Sent: Sunday, March 22, 2009 8:49 PM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] A105 flanges with API 5L Gr. X52 Pipie

On Mar 22, 2009, at 12:32 AM, Balakrishnan wrote:

> The question here is whether we can weld API 5L Gr X52 Pipe with
> A105 Flange.

That's the next question. I think we've settled most of the rest of the engineering issues you've been tasked with.

> The first issue is from the Design Parameters (Temperature and
> pressure) point of view whether it is okay or not.
Not quite. The first question in this batch is whether you have a qualified procedure and welders qualified to do the work. If you do, welding is OK; if you don't it's not. That means you'll need Pnumbers  all the test info required for procedure qualification, which may be a little tricky for the pipe grade. Since SA-105 is listed in the piping codes, you probably have half the work done.

> Now, question remaining is whether thickness difference is calling
> for Tapering or machining out the thickness on the strengthwise
> lower garde materail.

Weld details are in the piping codes. As previously mentioned.

> If there is no such issue, NEXT question is Weldabality of
> different Grades.
> I do not think there is any such issue between A105 and X52 grade.
There is if you don't have a qualified weld procedure and welders qualified to use it.

Christopher Wright P.E. |"They couldn't hit an elephant at chrisw@skypoint.com | this distance" (last words of Gen.

.......................................| John Sedgwick, Spotsylvania

1864)
http://www.skypoint.com/members/chrisw/

[Non-text portions of this message have been removed] Received on Sun Mar 22 13:47:00 2009